Wondering what the needlecast resistance is of "Black Hills" spruce? A guy at one of the local tree farms said it is resistant and stay away from blue spruce. Many of my neighbors conifers have needlecast so it is something I need to think about, but interestingly none of my dwarf Colorado blue spruce have any signs of disease and they've been in place a good 6-7 years now. So I'm wondering if the tree guy is FOS. Anyone know about the disease resistance of the Black Hills?